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have called the head ‘arcuatim” sulcato (which it is when 
regarded obliquely from in front),—but from a similar point of 
view the swlews in fasciatipennis is seen to be very much more 
strongly arched still. The two species, moreover, are very 
different in colour and markings, although the particular marking 
I emphasised in my tabulation now proves to be unreliable as a 
sharp distinction. 
